There is a post where @RyanAtSense addresses this as it used to be a feature for and “up next” heads up. For some reason you still have it. I wonder if your running a different firmware version
So, those numbers are an artifact from a deprecated feature (“Currently Learning” and “Up Next”). It was a great idea but turned out to be less so in practice, so it was pulled. You can read a bit more about the removal here: What’s New in v18